The best alternatives to Disco Steps are ActivityTracker, Pedometer++, and Step Buy Step. If these 3 options don't work for you, we've listed a few more alternatives below.
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ActivityTracker is an automatic step counter, pedometer for Android and iPhone that uses the embedded motion processor in order to save battery life (no GPS). It's an alternative to wearing and charging a dedicated fitness band. It keeps track of steps, calories burned, active time, and flights of stairs climbed.
Step It Up motivates you to stay healthy by helping you track your daily steps, distance traveled, flights of stairs climbed, calories burned and making sure you hit your step goal each and every day. Step It Up is available for iPhone and Apple Watch.